Temperatures in May
It's pleasantly warm in May in Johannesburg with an average temperature of 22°C. Temperatures this month range from a low of 20°C to a high of 24°C. At night, you can expect temperatures between 7°C and 11°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Johannesburg in May. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of May
The month of May starts in Johannesburg with warm temperatures, averaging around 23°C during the day and nights close to 10°C. There’s little chance of precipitation. The weather is mostly sunny and dry.
Mid-May
By mid-May, the average daytime temperature drops to around 22°C, with nights close to 9°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of May
By the end of May, the average daytime temperature in Johannesburg will be around 22°C, with nights close to 8°C. Barely any chance of precipitation. The weather will mostly be dry with lots of sunshine.
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Precipitation in May
In May, there is an average of 18 mm of precipitation, spread over 2 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
The average chance of precipitation is only 8% in May.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in May for Johannesburg. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Johannesburg in May |
London | ||
|---|---|---|---|
 Average Temperature |
22°C | 18°C | |
 High Temp |
24°C | 21°C | |
| Low Temp |
20°C | 15°C | |
 Total Precipitation |
18 mm | 46 mm | |
| Rainy Days |
2 days | 8 days | |
April
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is May a good time to visit Johannesburg?
Want nice weather? Then May is a great time to be in Johannesburg. You’ll have pleasant temperatures and little chance of rain this month.
Temperature records for Johannesburg in May
With 28°C, Johannesburg hit the highest temperature in the last 10 years in May 2015. The lowest daytime temperature in this month was 10°C in 2017. The extreme night temperatures ranged from a low of 0°C to a high of 14°C.
Check out the climate of Johannesburg for all months and discover the best travel time
Curious about the climate in other parts of South Africa? Check out the weather and climate in places like Cape Town, Krugerpark, Stellenbosch, or have a look at other destinations in South Africa.
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Daily Temperature in May in Johannesburg
This chart shows the average daily temperatures, both day and night, for each day in May in Johannesburg, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in May in Johannesburg
The chart below shows the average daily precipitation in May for Johannesburg, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for May, you can expect around 2 days of rain in Johannesburg.
Daily UV Index in May in Johannesburg
This chart shows the average daily UV index in May in Johannesburg, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in May in Johannesburg Over the Years
This chart shows the average temperature in May in Johannesburg, measured in degrees Celsius, over the past years.
Total Precipitation in May in Johannesburg Over the Years
This chart shows the average precipitation in May in Johannesburg, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in May for Johannesburg
Click on a specific day in May for detailed info on the typical weather on that day in Johannesburg. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in May in Johannesburg
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Average Weather in Johannesburg by Month
Click on a month below to see detailed weather info for Johannesburg. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Johannesburg for all months at once
